The top mistakes in Baby Mama http://www.moviemistakes.com/film7383 en Sat, 29 Nov 2008 06:55:32 +0000 141615 In every car scene in the movie that you look at Kate's glasses, you can see the green screen used reflecting off her glasses. 137508 When Kate gives Angie a ride back to Kate's house/apartment, the outside scene shows a road sign for PA-51. PA Route 51 is a road in southwestern Pennsylvania, not a road near Philadephia, which is where the film is set.